We have recently brought the ThermoScan 4520 because our two children (5 + 3) with the rectal measurement method were always at loggerheads. Although we have successively established ownership both slight variations to the conventional measurement method, as well as several measurements in the ear after five weeks, we are nonetheless pleased with the device. The deviations remain within the small frame (max. 0.3 degrees), but the stress factor for the whole family in is "action" immensely declined. For us as a family so the bottom line is a huge plus.
